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A method and system for improving voice fallback efficiency and success rate

A voice fallback and efficiency technology, applied in the field of LTE system, can solve the problem of not giving eNB processing priority, etc., to achieve the effect of ensuring timeliness and success rate, and improving efficiency and success rate

Active Publication Date: 2016-11-16
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the 3GPP TS (Third Generation Partnership Project Technical Specification) 36.413 protocol, both the CS Fallback indicator and the Security Key are optional cells that can be carried at the same time, but the protocol does not specify the time when two business processes run in parallel. eNB processing priority

Method used

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  • A method and system for improving voice fallback efficiency and success rate
  • A method and system for improving voice fallback efficiency and success rate
  • A method and system for improving voice fallback efficiency and success rate

Examples

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application example 1

[0053] When the eNB receives the UE context modification request issued by the MME and carries the CS Fallback Indicator and Security Key at the same time, when it needs to perform PS HO after the judgment, if image 3 As shown, the following steps will be performed:

[0054] Step 101: The eNB decodes the UE Context Modification Request message, and saves related information elements;

[0055] Step 102: The eNB determines that the UE context modification request message contains the CS Fallback Indicator information element, and directly replies a context modification response to the MME in the EPC;

[0056] Step 103: According to the UE support capability, if the eNB judges that there is a Grean / Utran target cell that supports PS HO, it will send a Handover Required (handover request) message to the MME to request PS handover, and package and transparently transmit the reconfiguration message UE;

[0057] Step 104: After receiving the Handover Required message, the MME will...

application example 2

[0063] When the eNB receives the UE context modification request sent by the MME and carries both the CS Fallback Indicator and the Security Key, and decides to perform CCO later, if Figure 4 As shown, the following steps will be performed:

[0064] Step 201: The eNB decodes the UE context modification request message, and saves related information elements;

[0065] Step 202: The eNB determines that the UE context modification request message contains the CS Fallback Indicator information element, and directly returns a context modification response to the MME in the EPC;

[0066] Step 203: According to the UE support capability, the eNB judges that there is no Grean / Utran target cell that supports PS HO, but CCO can be implemented;

[0067] Step 204: The eNB sends a MobilityFromEUTRANCommand message to the UE, which carries a CS Fallback Indicator information element, and the value of the purpose field in the information element is CCO, indicating that the UE is the CCO in...

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Abstract

The present invention discloses a method and system for improving the efficiency and success rate of voice fallback. The method is applied to an evolved node B and includes: receiving a user equipment context modification request message; if it is determined that the user equipment context modification request message is Carrying the voice fallback indication cell and the security key cell, the voice fallback processing procedure is started. The system is applied to an evolved Node B, and includes: first means for receiving a user equipment context modification request message; second means for determining that the user equipment context modification request message carries a voice fallback instruction message cell and the security key cell, the voice fallback process begins. After adopting the present invention, the eNB can effectively improve the efficiency and success rate of performing CS Fallback while renewing keys, and effectively ensure the timeliness and success rate of voice services.

Description

technical field [0001] The present invention relates to an LTE system, in particular to a method and system for improving the efficiency and success rate of voice fallback (CS Fallback). Background technique [0002] CS Fallback is a method that is applied when the E-UTRAN network and the GERAN (GSM EDGE Radio Access Network, GSM wireless access network) / UTRAN (UMTS Terrestrial Radio Access Network, Universal Mobile Telecommunications System Terrestrial Radio Access Network) network have the same coverage. A technology that falls back the user-related CS domain voice service establishment request that already resides in the LTE (Long Term Evolution, Long Term Evolution) network, and establishes it in the CS domain of the GERAN / UTRAN network. [0003] In the initial stage of LTE network deployment, the coverage of 2G / 3G network is much larger than that of LTE network. For networks without IMS (IP Multimedia Subsystem, IP Multimedia Subsystem) or networks that do not support V...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W12/04H04W36/00H04W12/041H04W12/0431
CPCH04W36/0022H04W12/0433
Inventor 黄晶李静岚
Owner ZTE CORP